![???????? ??????? ????? ???????????(One-Dimensional Arrays)
?????????? ???? ???????? ???? ?????? ??(?????? ????? ????)?????? ???? ?????? ???? ???? ?????????????????????
?????? ?????????????????????? ?????????? ???????? ??????? ????? ?????????? ???????:
????????????? ??????A??????? ? ?????????? ?????6??????? ???????????????.
????????? ?????? ?????????? ????? ?????????? ?????????? ??????? ???? ?????? ???? ????? ???????(???????? ???????)
(???????? ??????)????? ???????? ???????.
06/12/201509:45???
4
?????????:????????? ??????
?????? ??????? ????????
?????? ????? ????????
A[6]
X[6]](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-4-320.jpg)
![?????? ????? ????? ???????? ???? ?????????
????????? ??????? ??????? ????? ???????? ????? ???? ?????? ????? ????? ???????? ???? ?????????:
Type Array_Name[];
Array_Name=new type[size];
?????? ????? ?????? ????? ???? ????????? ????? ?????????:
Type Array_Name[]=new type[size];
??????
?type:?????????? ??????? ?????.
?Array_Name:????? ???????????? ?????? ?????? ?????????.
?[size]:??????? ????? ?????? ? ??????? ??????? ?????? ?????? ???? ???? ?????? ?????????? ??????? ????? ???? ??????.
?new:???? ??????? ?????? ?????? ?????????? ??????? ??????? ?????????????? ?????????????????????????.
06/12/201509:52???
5
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-5-320.jpg)
![?????????? ???????? ????? ???????:
?????? ???? ?????????? ???? ???????? ????????? ?????? ???? ??????? ????? ????????????????.
???????? ?????? ????? ????? ???? ???? ???????? ?????????? ?????? ???? ??????? ?????????? ??????? ?????? ???????? ????? ??????????????.
????? ??????? ??????? ???????? ????????? ?????? ?????? ?????? ???????? ????????5???? ???????? ??????? ???? ???????
?????????? ?????? ????? ???????.
int arr[]=new int[5];
arr[0]=15;
arr[1]=0;
arr[2]=133;
arr[3]=6;
arr[4]=17;
06/12/201509:58???
6
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-6-320.jpg)
![?????????? ???????? ????? ???????:
?????????????? ????????? ?????? ???? ??????? ??????????????:
????????????????????????????????????????????????????????????????????????????????????????????????????.
??????????????????????????????????????????????????????????????????????5?????????????????????????????????????
??????????????????????????????????????????????????????????????????????????:
Scanner input=new Scanner(System.in);
int arr[]=new int[5];
arr[0]=input.nextInt();
arr[1]=input.nextInt();
arr[2]=input.nextInt();
arr[3]=input.nextInt();
arr[4]=input.nextInt();
06/12/201510:10???
7
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-7-320.jpg)
![??????? ???????? ???????? ??????? ???????????????? ??????? ?????????? ??????????
06/12/201510:16????????????:????????? ??????
9
?????????? ?????? ?????????? ????????? ????????? ???? ?????? ????? ???? ??????? ???????? ???????? ??????? ???????for:
for(counter=0;counter<arr_size;counter++)
arr_name[counter]=input.nextInt;
?????????? ?????? ?????????? ????????? ????????? ???? ?????? ????? ???? ??????? ???????? ???????? ??????? ???????for
??????? ???? ???? ?????????? ????????:
for(counter=0;counter<arr_size;counter++)
System.out.print(arr_name[counter])
??????? ?????? ???? ?????????? ????????:
for(counter=0;counter<arr_size;counter++)
System.out.println(arr_name[counter])](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-9-320.jpg)
![?????????? ??????? ??????? ???????? ???????? ???????? ????????50???? ????????? ???????? ????????? ??????? ???? ??????
?????? ????.
import java.util.*;
public class JavaApplication9
{
public static void main(String args[])
{
Scanner input = new Scanner (System.in);
int arr[]=new int[50];
for (int i =0;i<50;i++)
arr[i]=input.nextInt();
for (int i =0;i<50;i++)
System.out.println(arr[i]);
} }
06/12/201510:41???
10
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-10-320.jpg)
![???? ??????? ??????? ???????? ???????? ???????? ???????? ??????20????????? ??????? ???????? ??????.
import java.util.*;
public class JavaApplication9 {
public static void main(String args[])
{
Scanner input = new Scanner (System.in);
int arr[]=new int[20];
int sum=0;
for (int i =0;i<20;i++)
arr[i]=input.nextInt();
for (int i =0;i<20;i++)
sum+=arr[i];
System.out.println("sum="+sum);
}
}
06/12/201510:42???
11
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-11-320.jpg)
![???? ??????? ??????? ???????? ???????? ???????? ???????? ??????9????????? ????? ???? ???????3¡Á3????????
??????? ????????????????.
07/12/201512:10????????????:????????? ??????
12
import java.util.Scanner;
public class JavaApplication7 {
public static void main(String[] args)
{
Scanner input= new Scanner (System.in);
int i,j ;
String arr[][]=new String[3][3];
for (i=0;i<3;i++)
for (j=0;j<3;j++)
arr[i][j]=input.next();
for (i=0;i<3;i++)
for (j=0;j<3;j++)
if (i==j)
System.out.print(" "+arr[i][j]);
}
}](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-12-320.jpg)
![????????????????????????????????????????????????????????20?????????????????????????????????
???????????????????.
import java.util.*;
public class JavaApplication9 {
public static void main(String args[])
{
Scanner input = new Scanner (System.in);
int A[]=new int[12];
int min,max;
for (int i =0;i<12;i++)
A[i]=input.nextInt();
min=max=A[0];
for (int i =0;i<20;i++)
if (A[i]<min)
min=A[i];
else if (A[i]>max)
max=A[i];
System.out.println("min="+min);
System.out.println("max="+max);
}}
06/12/201510:42???
13
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-13-320.jpg)
![????????????????????????????????????????????????????????????n??????????????????????????????
???????????????????????????????????????????????????.
import java.util.*;
public class JavaApplication9 {
public static void main(String args[])
{
Scanner input = new Scanner (System.in);
String item[]=new String[150];
float price[]=new float[150];
float max_price;
String max_item;
int num;
System.out.print(" Enter number of items");
num=input.nextInt();
for (int i =0;i<num;i++)
{
System.out.println("Enter item " + i + " name");
item[i]=input.next();
System.out.println("Enter item " + i+ " price");
price[i]=input.nextFloat();
}
max_price=price[0];
max_item=item[0];
for (int i =0;i<num;i++)
if (price[i]>max_price)
{
max_price=price[i];
max_item=item[i];
}
System.out.println("max price="+max_price);
System.out.println("the most expencive
item="+max_item);
}
}
06/12/201510:43???
14
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-14-320.jpg)
![?????????????????????????
Two-Dimensional Arrays
??????????????????????????????????????????????????????????????????????????????????.
?????????????????????????????????????????????????????????????????????????????????????????????????
???????????????????.
?????????????????????"A"???????????????.
?????????????????[3*3]????????????????????????????????????????????????(?????????????????????????)
????????????????????????????????????????????????????????????????????????????????????????????????????????
06/12/201510:55???
15
?????????:????????? ??????
210A
A[0,2]A[0,1]A[0,0]0
A[1,2]A[1,1]A[1,0]1
A[2,2]A[2,1]A[2,0]2](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-15-320.jpg)
![??????? ????? ???????? ???? ?????????
????????? ??????? ??????? ????? ?????? ????????? ????? ???? ??????? ????? ???????? ???? ?????????:
Type Array_Name[][];
Array_Name=new type[M][N];
????? ????? ?????? ????? ???? ????????? ????? ?????????:
Type Array_Name[]=new type[M][N];
?????
?type:?????????? ??????? ?????.
?Array_Name:????????? ????? ??(??????????.)
?new:???? ??????? ?????? ?????? ?????????? ??????? ??????? ?????????????????? ?????? ?????? ???????.
?M:?????????? ?????? ?????.
?N:?????????? ??????? ?????.
06/12/201511:00???
16
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-16-320.jpg)
![?????????? ???????? ????? ???????:
06/12/201511:09????????????:????????? ??????
17
???????????????????????????????????????????????:?????????????????????????????????????????????????????????
???????????????????????????????????????????????????????????.
A[0,0]=10;
A[0,1]=50;
A[0,2]=15;
A[1,0]=3;
??????? ????????? ?????? ???? ??????? ????????????????:?????????? ??????? ????? ??????? ????????? ?????????? ????????? ?????
?????? ????? ????? ?????????????????????.
A[0,0]= input.nextInt();
A[0,1]= input.nextInt();
A[0,2]= input.nextInt();
A[1,0]= input.nextInt();](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-17-320.jpg)
![??????? ???????? ???????? ??????? ?????????????? ????? ??????????
06/12/201511:24????????????:????????? ??????
18
??????????? ????????? ????? ?????????? ???????? ??????? ??????????????For
for (Counter1 = 0 ; Counter1< nuumber_of_rows; Counter1 ++)
for(Counter2 = 0 ; Counter2< nuumber_of_col; Counter2 ++)
Array_Name[Counter1,Counter2]= input.nextType();
????????????????? ????????? ????? ?????????? ???????? ??????????????For
for (Counter1 = 0 ; Counter1< nuumber_of_rows; Counter1 ++)
{
for(Counter2 = 0 ; Counter2< nuumber_of_col; Counter2 ++)
System.out.print(Array_Name[Counter1,Counter2]);
System.out.print();
}](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-18-320.jpg)
![???? ??????? ??????? ???????? ???????? ???????? ???????? ??????25???????? ??????? ???? ??????5*5????????????????????.
public class JavaApplication7
{
public static void main(String[] args)
{
Scanner input= new Scanner (System.in);
int x[][]=new int[5][5];
int i,j;
for(i=0;i<5;i++)
for (j=0;j<5;j++)
{
System.out.print("Enter Item(" + i + "," + j + ")=");
x[i][j]=input.nextInt();
}
for(i=0;i<5;i++)
{
for (j=0;j<5;j++)
{
System.out.print(x[i][j]+" ");
}
System.out.println();
}
}
}
06/12/201511:28???
19
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-19-320.jpg)
![??????? ???????? ???????? ??????5???? ????????? ??????? ??????3?????? ???? ?????? ????? ???????? ?????? ???? ??????
?????? ?????? ????? ????????? ???????? ??????? ????? ??????? ???????.
import java.util.Scanner;
public class JavaApplication7 {
public static void main(String[] args)
{
Scanner input= new Scanner (System.in);
int i,j ,sum; double avg,max=0;
String maxname="";
String name[]=new String[5] ;
int Grade[][]=new int[5][3];
for (i=0;i<5;i++)
{
System.out.print("Enter student " + i + " name:");
name[i]=input.next();
sum=0;
for (j=0;j<3;j++)
{
System.out.print("Enter student" + i + " grade" + j + "=");
Grade[i][j]=input.nextInt();
sum = sum + Grade[i][j]; }
avg = sum / 3;
System.out.println("Name=" + name[i]);
System.out.println ("avg=" +avg);
if(avg > max )
{
max = avg; maxname = name[i];
} }
System.out.println("MaxName:"+maxname);
System.out.println("max="+max);
}
}
06/12/201511:44???
20
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-20-320.jpg)
![??????? ???????? ???????? ???????? ???????? ??????3*4???????? ???????? ??????? ????????.
import java.util.Scanner;
public class JavaApplication7 {
public static void main(String[] args)
{
Scanner input= new Scanner (System.in);
int i,j ;
int arr[][]=new int[3][4];
for (i=0;i<3;i++)
for (j=0;j<4;j++)
arr[i][j]=input.nextInt();
for (i=0;i<3;i++)
for (j=0;j<1;j++)
System.out.println(" "+arr[i][1]);
}
}
06/12/201511:50???
21
?????????:????????? ??????](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-21-320.jpg)
![??????? ???????? ???????? ???????? ???????? ??????5*5?????? ???? ?????? ?????? ????????3.
06/12/201511:53????????????:????????? ??????
22
import java.util.Scanner;
public class JavaApplication7 {
public static void main(String[] args)
{
Scanner input= new Scanner (System.in);
int i,j,max ;
int arr[][]=new int[5][5];
for (i=0;i<5;i++)
for (j=0;j<5;j++)
arr[i][j]=input.nextInt();
max=arr[0][0];
for (i=0;i<1;i++)
for (j=0;j<5;j++)
if (arr[2][j]>max)
max=arr[2][j];
System.out.print(" Max "+max);
}
}](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-22-320.jpg)
![??????? ?????? ???? ?????? ??????? ???? ??????????? ????????? ?????? ??????? ???????? ???????? ???????? ?????? ???????? ??????
????? ??????? ??????????? ???????? ??????? ???????? ?????? ???? ?????? ???? ??????? ???????? ???? ????????? ?????? ???? ??????
?????? ?????? ????? ????????? ???????? ???????.
06/12/201511:57????????????:????????? ??????
23
import java.util.Scanner;
public class JavaApplication7 {
public static void main(String[] args)
{
Scanner input= new Scanner (System.in);
int i,j ,sum; double avg,max=0; String maxname="";
String name[]=new String[3] ;
int Grade[][]=new int[3][3];
double avge[]=new double [3];
for (i=0;i<3;i++)
{
System.out.print("Enter student " + i + " name:");
name[i]=input.next();
sum=0;
for (j=0;j<3;j++)
{
System.out.print("Enter student" + i + " grade" + j + "=");
Grade[i][j]=input.nextInt();
sum = sum + Grade[i][j];
}](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-23-320.jpg)
![????????? ????????? ???? ???????? ??????
07/12/201512:01????????????:????????? ??????
24
avg = sum / 3; avge[i]=avg;
}
System.out.println("name " + "| Average");
System.out.println("--------------------");
for (i=0;i<3;i++)
{
System.out.print(name[i]+ " | ");
System.out.println(avge[i]);
}
for (i=0;i<3;i++)
if (avge[i]>max)
{max=avge[i];
maxname=name[i];
}
System.out.println("--------------------");
System.out.println ("name:" + maxname);
System.out.println("max=" + max);
}
}](https://image.slidesharecdn.com/javaarrays-151206225553-lva1-app6892/85/Java-arrays-By-Salem_Adrugi-24-320.jpg)
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Java arrays/ By : Salem_Adrugi
- 1. ?????????????????:????????????????????? ??????????????? ?????????? ???????? ?????? ????????? ????????? ??????????:?????????? ????????? ???? ???????????????????????? in Java?Arrays ???????? ???????/??????? ????????? ??????-???????/???????? ?????
- 2. Out lines ?????????? ???? ???????????????? ???? ????. ???????????????? ????????????????: ??????? ????? ????? ???????? ???? ?????????. ????????? ??????? ????? ?????????? ??????? ???????. ??????? ????? ????? ???????? ??????? ???????? ???????. ????????? ??????? ????? ??????????? ???? ???????. ??????????????????????????: ?????? ???????? ???? ????????????????. ?????? ?????????? ??????? ??????????????. ???????? ????? ???????? ??????? ???????? ???????. ?????? ??????????? ???? ????????????????. 07/12/201512:21??? 2 ?????????:????????? ??????
- 3. ???? ????????????? ???? ????? ??????????? What is Array & What is Array Types ???????????????????????????????????????????????????????????????????????????????????(?????????????)????? ?????????????????????????????????????????????????????????????????. ????????????????????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????. ???????? ??????????? ???? ??????? ????? ??????? ??????: ????????? ??????? ????? ???????????One-Dimensional Arrays ?????????? ????? ???????????Two-Dimensional Arrays 06/12/201509:37??? 3 ?????????:????????? ??????
- 4. ???????? ??????? ????? ???????????(One-Dimensional Arrays) ?????????? ???? ???????? ???? ?????? ??(?????? ????? ????)?????? ???? ?????? ???? ???? ????????????????????? ?????? ?????????????????????? ?????????? ???????? ??????? ????? ?????????? ???????: ????????????? ??????A??????? ? ?????????? ?????6??????? ???????????????. ????????? ?????? ?????????? ????? ?????????? ?????????? ??????? ???? ?????? ???? ????? ???????(???????? ???????) (???????? ??????)????? ???????? ???????. 06/12/201509:45??? 4 ?????????:????????? ?????? ?????? ??????? ???????? ?????? ????? ???????? A[6] X[6]
- 5. ?????? ????? ????? ???????? ???? ????????? ????????? ??????? ??????? ????? ???????? ????? ???? ?????? ????? ????? ???????? ???? ?????????: Type Array_Name[]; Array_Name=new type[size]; ?????? ????? ?????? ????? ???? ????????? ????? ?????????: Type Array_Name[]=new type[size]; ?????? ?type:?????????? ??????? ?????. ?Array_Name:????? ???????????? ?????? ?????? ?????????. ?[size]:??????? ????? ?????? ? ??????? ??????? ?????? ?????? ???? ???? ?????? ?????????? ??????? ????? ???? ??????. ?new:???? ??????? ?????? ?????? ?????????? ??????? ??????? ?????????????? ?????????????????????????. 06/12/201509:52??? 5 ?????????:????????? ??????
- 6. ?????????? ???????? ????? ???????: ?????? ???? ?????????? ???? ???????? ????????? ?????? ???? ??????? ????? ????????????????. ???????? ?????? ????? ????? ???? ???? ???????? ?????????? ?????? ???? ??????? ?????????? ??????? ?????? ???????? ????? ??????????????. ????? ??????? ??????? ???????? ????????? ?????? ?????? ?????? ???????? ????????5???? ???????? ??????? ???? ??????? ?????????? ?????? ????? ???????. int arr[]=new int[5]; arr[0]=15; arr[1]=0; arr[2]=133; arr[3]=6; arr[4]=17; 06/12/201509:58??? 6 ?????????:????????? ??????
- 7. ?????????? ???????? ????? ???????: ?????????????? ????????? ?????? ???? ??????? ??????????????: ????????????????????????????????????????????????????????????????????????????????????????????????????. ??????????????????????????????????????????????????????????????????????5????????????????????????????????????? ??????????????????????????????????????????????????????????????????????????: Scanner input=new Scanner(System.in); int arr[]=new int[5]; arr[0]=input.nextInt(); arr[1]=input.nextInt(); arr[2]=input.nextInt(); arr[3]=input.nextInt(); arr[4]=input.nextInt(); 06/12/201510:10??? 7 ?????????:????????? ??????
- 8. ????????? ??????? ?????????? ?????????? ??????? ???????? ??????? ?????????????????????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????. ??????????????????????????????????????????????????????????????????????????????????????????????????. ????????????????????????????????????????????????????????????????. ???????? ????????????????? ??????? ?????? ??????? ????? ????????? ???? ????????? ??????. 07/12/201512:31??? 8 ?????????:????????? ??????
- 9. ??????? ???????? ???????? ??????? ???????????????? ??????? ?????????? ?????????? 06/12/201510:16????????????:????????? ?????? 9 ?????????? ?????? ?????????? ????????? ????????? ???? ?????? ????? ???? ??????? ???????? ???????? ??????? ???????for: for(counter=0;counter<arr_size;counter++) arr_name[counter]=input.nextInt; ?????????? ?????? ?????????? ????????? ????????? ???? ?????? ????? ???? ??????? ???????? ???????? ??????? ???????for ??????? ???? ???? ?????????? ????????: for(counter=0;counter<arr_size;counter++) System.out.print(arr_name[counter]) ??????? ?????? ???? ?????????? ????????: for(counter=0;counter<arr_size;counter++) System.out.println(arr_name[counter])
- 10. ?????????? ??????? ??????? ???????? ???????? ???????? ????????50???? ????????? ???????? ????????? ??????? ???? ?????? ?????? ????. import java.util.*; public class JavaApplication9 { public static void main(String args[]) { Scanner input = new Scanner (System.in); int arr[]=new int[50]; for (int i =0;i<50;i++) arr[i]=input.nextInt(); for (int i =0;i<50;i++) System.out.println(arr[i]); } } 06/12/201510:41??? 10 ?????????:????????? ??????
- 11. ???? ??????? ??????? ???????? ???????? ???????? ???????? ??????20????????? ??????? ???????? ??????. import java.util.*; public class JavaApplication9 { public static void main(String args[]) { Scanner input = new Scanner (System.in); int arr[]=new int[20]; int sum=0; for (int i =0;i<20;i++) arr[i]=input.nextInt(); for (int i =0;i<20;i++) sum+=arr[i]; System.out.println("sum="+sum); } } 06/12/201510:42??? 11 ?????????:????????? ??????
- 12. ???? ??????? ??????? ???????? ???????? ???????? ???????? ??????9????????? ????? ???? ???????3¡Á3???????? ??????? ????????????????. 07/12/201512:10????????????:????????? ?????? 12 import java.util.Scanner; public class JavaApplication7 { public static void main(String[] args) { Scanner input= new Scanner (System.in); int i,j ; String arr[][]=new String[3][3]; for (i=0;i<3;i++) for (j=0;j<3;j++) arr[i][j]=input.next(); for (i=0;i<3;i++) for (j=0;j<3;j++) if (i==j) System.out.print(" "+arr[i][j]); } }
- 13. ????????????????????????????????????????????????????????20????????????????????????????????? ???????????????????. import java.util.*; public class JavaApplication9 { public static void main(String args[]) { Scanner input = new Scanner (System.in); int A[]=new int[12]; int min,max; for (int i =0;i<12;i++) A[i]=input.nextInt(); min=max=A[0]; for (int i =0;i<20;i++) if (A[i]<min) min=A[i]; else if (A[i]>max) max=A[i]; System.out.println("min="+min); System.out.println("max="+max); }} 06/12/201510:42??? 13 ?????????:????????? ??????
- 14. ????????????????????????????????????????????????????????????n?????????????????????????????? ???????????????????????????????????????????????????. import java.util.*; public class JavaApplication9 { public static void main(String args[]) { Scanner input = new Scanner (System.in); String item[]=new String[150]; float price[]=new float[150]; float max_price; String max_item; int num; System.out.print(" Enter number of items"); num=input.nextInt(); for (int i =0;i<num;i++) { System.out.println("Enter item " + i + " name"); item[i]=input.next(); System.out.println("Enter item " + i+ " price"); price[i]=input.nextFloat(); } max_price=price[0]; max_item=item[0]; for (int i =0;i<num;i++) if (price[i]>max_price) { max_price=price[i]; max_item=item[i]; } System.out.println("max price="+max_price); System.out.println("the most expencive item="+max_item); } } 06/12/201510:43??? 14 ?????????:????????? ??????
- 16. ??????? ????? ???????? ???? ????????? ????????? ??????? ??????? ????? ?????? ????????? ????? ???? ??????? ????? ???????? ???? ?????????: Type Array_Name[][]; Array_Name=new type[M][N]; ????? ????? ?????? ????? ???? ????????? ????? ?????????: Type Array_Name[]=new type[M][N]; ????? ?type:?????????? ??????? ?????. ?Array_Name:????????? ????? ??(??????????.) ?new:???? ??????? ?????? ?????? ?????????? ??????? ??????? ?????????????????? ?????? ?????? ???????. ?M:?????????? ?????? ?????. ?N:?????????? ??????? ?????. 06/12/201511:00??? 16 ?????????:????????? ??????
- 17. ?????????? ???????? ????? ???????: 06/12/201511:09????????????:????????? ?????? 17 ???????????????????????????????????????????????:????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????. A[0,0]=10; A[0,1]=50; A[0,2]=15; A[1,0]=3; ??????? ????????? ?????? ???? ??????? ????????????????:?????????? ??????? ????? ??????? ????????? ?????????? ????????? ????? ?????? ????? ????? ?????????????????????. A[0,0]= input.nextInt(); A[0,1]= input.nextInt(); A[0,2]= input.nextInt(); A[1,0]= input.nextInt();
- 18. ??????? ???????? ???????? ??????? ?????????????? ????? ?????????? 06/12/201511:24????????????:????????? ?????? 18 ??????????? ????????? ????? ?????????? ???????? ??????? ??????????????For for (Counter1 = 0 ; Counter1< nuumber_of_rows; Counter1 ++) for(Counter2 = 0 ; Counter2< nuumber_of_col; Counter2 ++) Array_Name[Counter1,Counter2]= input.nextType(); ????????????????? ????????? ????? ?????????? ???????? ??????????????For for (Counter1 = 0 ; Counter1< nuumber_of_rows; Counter1 ++) { for(Counter2 = 0 ; Counter2< nuumber_of_col; Counter2 ++) System.out.print(Array_Name[Counter1,Counter2]); System.out.print(); }
- 19. ???? ??????? ??????? ???????? ???????? ???????? ???????? ??????25???????? ??????? ???? ??????5*5????????????????????. public class JavaApplication7 { public static void main(String[] args) { Scanner input= new Scanner (System.in); int x[][]=new int[5][5]; int i,j; for(i=0;i<5;i++) for (j=0;j<5;j++) { System.out.print("Enter Item(" + i + "," + j + ")="); x[i][j]=input.nextInt(); } for(i=0;i<5;i++) { for (j=0;j<5;j++) { System.out.print(x[i][j]+" "); } System.out.println(); } } } 06/12/201511:28??? 19 ?????????:????????? ??????
- 20. ??????? ???????? ???????? ??????5???? ????????? ??????? ??????3?????? ???? ?????? ????? ???????? ?????? ???? ?????? ?????? ?????? ????? ????????? ???????? ??????? ????? ??????? ???????. import java.util.Scanner; public class JavaApplication7 { public static void main(String[] args) { Scanner input= new Scanner (System.in); int i,j ,sum; double avg,max=0; String maxname=""; String name[]=new String[5] ; int Grade[][]=new int[5][3]; for (i=0;i<5;i++) { System.out.print("Enter student " + i + " name:"); name[i]=input.next(); sum=0; for (j=0;j<3;j++) { System.out.print("Enter student" + i + " grade" + j + "="); Grade[i][j]=input.nextInt(); sum = sum + Grade[i][j]; } avg = sum / 3; System.out.println("Name=" + name[i]); System.out.println ("avg=" +avg); if(avg > max ) { max = avg; maxname = name[i]; } } System.out.println("MaxName:"+maxname); System.out.println("max="+max); } } 06/12/201511:44??? 20 ?????????:????????? ??????
- 21. ??????? ???????? ???????? ???????? ???????? ??????3*4???????? ???????? ??????? ????????. import java.util.Scanner; public class JavaApplication7 { public static void main(String[] args) { Scanner input= new Scanner (System.in); int i,j ; int arr[][]=new int[3][4]; for (i=0;i<3;i++) for (j=0;j<4;j++) arr[i][j]=input.nextInt(); for (i=0;i<3;i++) for (j=0;j<1;j++) System.out.println(" "+arr[i][1]); } } 06/12/201511:50??? 21 ?????????:????????? ??????
- 22. ??????? ???????? ???????? ???????? ???????? ??????5*5?????? ???? ?????? ?????? ????????3. 06/12/201511:53????????????:????????? ?????? 22 import java.util.Scanner; public class JavaApplication7 { public static void main(String[] args) { Scanner input= new Scanner (System.in); int i,j,max ; int arr[][]=new int[5][5]; for (i=0;i<5;i++) for (j=0;j<5;j++) arr[i][j]=input.nextInt(); max=arr[0][0]; for (i=0;i<1;i++) for (j=0;j<5;j++) if (arr[2][j]>max) max=arr[2][j]; System.out.print(" Max "+max); } }
- 23. ??????? ?????? ???? ?????? ??????? ???? ??????????? ????????? ?????? ??????? ???????? ???????? ???????? ?????? ???????? ?????? ????? ??????? ??????????? ???????? ??????? ???????? ?????? ???? ?????? ???? ??????? ???????? ???? ????????? ?????? ???? ?????? ?????? ?????? ????? ????????? ???????? ???????. 06/12/201511:57????????????:????????? ?????? 23 import java.util.Scanner; public class JavaApplication7 { public static void main(String[] args) { Scanner input= new Scanner (System.in); int i,j ,sum; double avg,max=0; String maxname=""; String name[]=new String[3] ; int Grade[][]=new int[3][3]; double avge[]=new double [3]; for (i=0;i<3;i++) { System.out.print("Enter student " + i + " name:"); name[i]=input.next(); sum=0; for (j=0;j<3;j++) { System.out.print("Enter student" + i + " grade" + j + "="); Grade[i][j]=input.nextInt(); sum = sum + Grade[i][j]; }
- 24. ????????? ????????? ???? ???????? ?????? 07/12/201512:01????????????:????????? ?????? 24 avg = sum / 3; avge[i]=avg; } System.out.println("name " + "| Average"); System.out.println("--------------------"); for (i=0;i<3;i++) { System.out.print(name[i]+ " | "); System.out.println(avge[i]); } for (i=0;i<3;i++) if (avge[i]>max) {max=avge[i]; maxname=name[i]; } System.out.println("--------------------"); System.out.println ("name:" + maxname); System.out.println("max=" + max); } }
- 25. ????????? ?????????? ?????? ????? ?????????:????????? ??????? ?????? Salemaldrugi@gmail.com Salemaldrugi@yahoo.com 06/12/201509:18??? 25 ?????????:????????? ??????